Adjustment Items - Epson SC-F9200 Series Service Manual

SC-F9200 Series

4.1.3 Adjustment Items

The following table describes the general outline of the adjustments.
Class Adjustment Items
CR Belt Tension Check
CR related
APG function check
Manual Uni-D
Adjustment
Manual Bi-D
Adjustment
ADJUSTMENT
Table 4-2. Adjustment Items
Overview
Apply a specified tension to the CR timing belt.
Measure the tension of the belt using the sonic
tensimeter to check if it is within standards. If
not, adjust the tension.
Rotate the APG motor to change the PG, and see
if the PG is correctly set to its home position
(TYP).
Reduce misalignment of ink droplets fired to
paper during unidirectional printing.
Reduce misalignment of ink droplets fired to
paper during bidirectional printing.
Symptoms that the Adjustment is Needed
When the belt tension is out of standards, the
following symptoms may occur.

Belt tension is high:
The life of the belt will be shortened. High
load applied to the carriage causes frequent
wait control over the carriage movements to
prevent overheating. If the tension is too high,
the shaft of the motor leans and the brush in
the motor becomes worn, and will result in CR
overload error (113A).

Belt tension is low:
The belt teeth slip and the carriage swings.
The correction by the active damper does not
work and the bands (vertical bands) occur near
the side edges of paper.
When the PG is not switched properly responding
to the print setting, low image quality or CL
operation abnormality may occur.
If this adjustment is not made, print quality
problems such as misaligned lines, grainy image,
banding may occur.
If this adjustment is not made, print quality
problems such as misaligned lines, grainy image,
banding may occur.
Overview
Service
Printer Mode Jig Media
Program
Normal Tensimeter
√
mode U-507
Normal
√
mode
Normal
√
PGPP
mode
Normal
√
PGPP
mode
SE Group Confidential (Related Staff Only)
Revision C
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